S71200 Password Unlock Work Work -

- If the CPU is in "Unknown" password state, you may need to use Siemens' "Reset to Factory Settings" via TIA Portal, which requires physical access to the CPU.

: This requires at least enough access to establish an online connection. If "Full Protection" is enabled, this menu may be restricted without the password. 4. Password Security Levels s71200 password unlock work

This method permanently deletes the existing PLC program and data. There is no way to "extract" the password or the program without knowing the original password. - If the CPU is in "Unknown" password

Are you the legitimate owner trying to recover access to your own PLC? If so, I can provide the official Siemens procedure for resetting the CPU. s71200 password unlock work